Wisycom s r l CST38 VHF Base Transmitter User Manual CST38

Wisycom VHF Base Transmitter CST38

User Manual

CST38 User Manual VHF MICROEAR "DESKTOP" TRANSMITTER SN: ________________ Rev. 02 Date: 16 May 2017
Rev. 02CST38 User Manual 
CST38 User Manual Rev. 02 2 BRIEF DESCRIPTION CTK38 is composed by a VHF transmitter (CST38) and a power supply (PSP910). The CST-  and many modulation parameters such as deviation, level/frequency curve, compression factor has been optimized. Therefore CST38 assures maximum performances of MicroEar both as sound quality and as audio level (in any case limited because of the very small size of receiver). Higher power transmitter are available to further increase the coverage area (cell); it is also possible to link in parallel several transmitters (in iso-frequency mode) to create a multiple cells coverage. MicroEar internal battery has about 30 hours working autonomy; in any case the original battery once activated (taking out metal label) has a limited life even in power off. When empty battery, MicroEar will drastically reduce audio level and receiver sensitivity. Example of VHF IEM System * Not included AGN00* MICROEAR RECEIVER* CST38 PSP910
Rev. 02CST38 User Manual  SAFETY INSTRUCTION  Read this safety instruction and the manual first  Follow all instructions and information.  Do not lose this manual.  Do not use this apparatus under the rain or near the water.  Do not install the apparatus near heaters or in hot environments, do not use outside the operating temperature range.  Do not open the apparatus, only qualified service technician are enabled to operate on it. The apparatus needs servicing when it is not properly working or is damaged by liquids, moisture or other objects are fallen in the apparatus.  Use only accessories or replacement parts authorized or specified by the manufacturer.  Clean the apparatus only with dry cloths, do not use liquids.  Report the serial number and the purchasing date in front of the manual. It is needed to have proper replacement parts or accessories from the manufacturer.  When replacement parts are needed, use only replacement parts authorized from the manufacturer. Substitution with not authorized parts could result in electric shock, hazards or fire.  Keep attention on all the labels with warnings or hazards on the apparatus. The apparatus is intended for professional use; anyway the manufacturer alerts the user that the headphone output power of the apparatus could exceed the level of 85 dB(A) of sound pressure level and this could be dangerous for the hearings. Do not use the headphone with high power level or for long time. Reduce the power or suspend the hearing in case of any kind of hearing problem.
CST38 User Manual Rev. 02 4 FRONT PANEL 1) SELECTOR: modulation audio input level range (Micro / Line). 2) LED INDICATION: peak-indicator / limiter-on status (yellow Led). 3) ADJUSTMENT: audio input sensitivity. With the optimum sensitivity adjustment, the yellow Led [2] must flash under modulation peaks. 4) SELECTOR: transmitting channel ( 0 ÷ F ). 5) LED INDICATION: apparatus is on (red Led). 6) SWITCH: On / Off (Power).
Rev. 02CST38 User Manual  REAR PANEL 7) CONNECTOR: antenna (N-F type connector). 8) CONNECTOR: modulation audio input (XLR3-F type connector). The audio input line is transformer balanced and floating.  pin 1 = ground;  pin 2 = AF-a input;  pin 3 = AF-b input. 9) - 6.3 mm, standard jack type). The transmission is allowed when the central pin (hot) is connected to external ring (ground). Note #1: in the standard version of CST 38, when the PTT plug is not inserted, the carrier is still activated. Instead, when the CST 38 is provided with the optional VOX 38  Voice Activated Circuit board, the carrier is activated automatically only when the input audio-signal reaches the activation-threshold pre-set in the VOX 38 board. However, the external PTT circuit (if connected) can override the VOX 38 device and force the CST 38 in continuous transmission. 10) CONNECTOR: dc power input (10.5 ÷ 16 Vdc). ( pin 1 = +Vdc,  pin 2 = ground).
CST38 User Manual Rev. 02 6 OPTIONAL VOX 38 - Voice Activated Circuit board This device is useful to switch on automatically the carrier of the transmitter only when the circuit is mounted on a printed-circuit board, that has to be factory-mounted in the transmitter. Once the modulation audio signal reaches the pre-set threshold, the transmitter is activated. When the modulating audio signal is not more present, the carrier is switched off again, after a pre-set delay time. Consequently the relevant MicroEar receiver is muted by its built-in squelch circuit, preventing the listening of unwanted noise. Two pre-setting values can be adjiusted by means of relevant screwdriver-trimmers situated on the printed- VOX 38 board, mounted on the CST 38 main board
Rev. 02CST38 User Manual  TECHNICAL SPECIFICATIONS  Switchable channels : 16, preset in the 140 ÷ 250 MHz range (other upon request).  Switching-window : 10 MHz (other upon request).  Frequencies : microprocessor controlled PLL synthesizer circuit, with 25 kHz minimum step [1].          Programming   Channel spacing : 25KHz standard (Other on request)  Frequency error : < ±5 ppm, in the rated temperature range.  Temperature range : -10 ÷ +55 °C.  RF output power : 300 ÷ 10 mW ( 1 dB) [1].  RF output impedance : 50 ohm (type N-F connector).  Spurious emissions : < 2 nW.  Transmission activation : remote PTT (Push To Talk) circuit, wired to jack connector. The transmission is allowed when the central pin (hot) is connected to external ring (ground). See Note #1 on front page.  Modulation : FM (peak deviation = ±5 kHz).  Mod. audio input : transformer balanced, floating.  Mod. audio input level : Micro / Line switchable, and externally adjustable between:  Micro = -64 ÷ -34 dBu (0.5 ÷ 15 mV) - Input impedance = > 2 Kohm  Line = -22 ÷ +8 dBu (60 ÷ 1,950 mV) - Input impedance = > 10 kohm.  Peak-limiter : automatic, with dynamic-range > 30 dB over the level set for the nominal modulation.  NR system : compressor circuit with noise-gate, specially adapted to the MicroEar receivers.  AF bandwidth : 200 Hz ÷ 5 kHz (-3 dB).  Distortion : < 0.5 % (0.25% typ.).  SND/N ratio : > 80 dB (83 dB typ.), CCITT measured.  Led indications :  Transmitter On (red LED)  Limiter On (yellow LED).  Powering : 10.5 ÷ 16 Vdc, 300 mA max. (negative ground).  Dimensions : 40 x 120 x 175 mm.  Weight : 700 g ca. NOTE [1]: according to local regulations
CST38 User Manual Rev. 02 8 MANUFACTURER DECLARATIONS In compliance with the following requirements  RoHS Directive (2002/95/EC)  WEEE Directive (2002/96/EC) Please dispose of the diversity transmitter at the end of its operational lifetime by taking it to your local collection point or recycling center for such equipment ITALY ONLY Obblighi di informazione agli utilizzatori pericolose nelle apparecchiature  Smaltimento di apparecchiature elettriche ed elettroniche di tipo professionale indica che il prodotto alla fine della propria vita utile deve essere raccolto separatamente dagli altri rifiuti. La raccolta differenziata della presente apparecchiatura giunta a fine vita è organizzata dovrà quindi contattare il produttore e seguire il sistema che questo ha adottato per iatura giunta a fine vita. trattamento e allo smaltimento ambientale compatibile contribuisce ad evitare possibili effetti negativi sulla salute e favorisce il reimpiego e/o riciclo dei materiali di cui è composta  -ministrative previste dalla normativa vigente. Iscrizione al Registro A.E.E. n. IT09100000006319 .
Rev. 02CST38 User Manual  Compliance Model In Compliance with Max Power& Freq. range Country CST38 EN 301 489-1/-9 EN 600065 EN 300 422-1/-2 EN 300 454-1/-2 300mW*1 140-250MHz Europe CST38-US PART 74 FCC-ID: POUCST38 RSS-210 IC: 11967A-CST38 Limited to 210-216MHz 50mW EIRP 210-216MHz USA, Canada *1 CST38 is not an SRD device, thus it requires specific authorization by your local frequency authority! Statements regarding FCC and Industry Canada EN This device complies with Industry Canada RSS-210. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. The antenna(s) must be installed and operated at a minimum distance of 20cm between the radiator and your body. This radio transmitter IC: 11967A-CST38 has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. FR Le présent apparcables aux appareils radio RSS-210.               llage radioélectrique subi, même si le  votre corps LIC: 11967A-CST38 a été approve par Industrie Canada pour travailler avec les tipologies dantennes ci dessous avec le gain maximal admissible indiqué. Les types d'antenne non inclus dans cette liste, ayant un gain supérieur au gain maximal indiqué pour ce type, sont strictement interdits pour être utilisés avec cet appareil. Before putting the device into operation, please observe the respective country-specific regulations!
CST38 User Manual Rev. 02 10 This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help. Changes or modifications made to this equipment not expressly approved by Wisycom srl may void the FCC authorization to operate this equipment. Antenna Code Description Max permissible gain [dBi] AWN38-V11 1/4 whip antenna 2,14 AGN00-V9 1/4 mobile whip antenna 2,14
Rev. 02CST38 User Manual  Wireless System Communications Via Spin 156  I- Italy Tel. +39 -0424 -382605  Fax +39 - 0424 - 382733 www.wisycom.com  e-mail: sales@wisycom.com

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